Motor mounting



Aug. 25, 19368 H. T. WOOLSON 2,052,009

MOTOR MOUNTING Filed Feb. 8, 1934 2 Sheets-Sheet 1 flllnllldlli'I INVENTOR. H/IRRY 7: WO0L0M v BY m w w m.

A TTORNEYS,

Aug. 25, 1936.,

H. T. WOOLSON MOTOR MOUNTING 2 Sheets-Sheet 2 Filed Feb. 8, 1934 A TTORNEYS Patented Aug. 25, 1936.

2,052,009 Moron Momma Harry T. woolson, Detroit, Mich, assignor to Chrysler Corporation, Detroit, Mich, a corporation of Delaware Application February a, 1034, Serial No. 710,268

' 1 Claims. (01. 180-64) This invention relates to an improved mounting for engines such as internal combustion engines of the type used inpropelling vehicles and it has particular relation to a novel form and arrangement of mounting members which permit a limited amount of movement of the engine; the invention being a continuation in part of the subject matter set forth in my co-pending application Serial No. 637,037.

More specifically, this invention provides a means of supporting an engine of the character which has clutch and variable speed transmission mechanisms rigidly assembled together as a unit in such a manner that the entire unit may oscillate during operation under the influence of the torque reaction and other forces acting thereon. In certain installations of this character, that part of the transmission of the engine unit with which the gear shift lever connects has been caused to move sufficiently to impart vibration of considerable amplitude to the gear shift lever. The upper portion of a gear shift lever which extends, above its swivel support, into a passenger compartment of a vehicle is much longer than the lower section of the lever which extends from the swivel support into the transmission casing and consequently only a slight movement of the lower end of the lever by the oscillatory movement of the engine causes excessive movement of the upper section of the lever.

My improved engine mounting and the arrangement of mounting members embodied therein allow substantial movement of the engine under the influence of the forces to which it is subjected so as to prevent the direct applicationof such forces upon the frame and body structure of the engine, and the members of the mounting which yieldably oppose oscillation of the unit under the torque reaction thereof also cause the portion of the transmission in the vicinity of the parts thereof which connect with the gear shift lever to remain in a comparatively fixed relation with respect to the frame structure of the vehicle. This is accomplished by disposing the torque resisting members in such a manner as to hold the portion of the transmission with which the gear shift lever connects against displacement and to bring the axis about which the oscillatory movement of the unit occurs into close proximity of the junction of the shifter bar'sof the transmission and the lower end of the'gear shift lever. Application of shock and vibration u on the chassis and body structure is also guarde against in my improved engine mounting by providing yieldable material in the mounting members having the proper characteristics and by positioning the members in such a relation that the axis about which the engine is oscillated under the influence of the torque reaction impulses and other forces passes in the vicinity of the center of mass of the 5 engine unit, as well as in the vicinity of or substantially through the junction of the gear shift lever and shifter bars.

One of the main objects of the invention is to provide an improved engine mounting which permits oscillatory movement of an engine unit with comparatively little or no displacement of the center of mass of the unit and which causes the junction of the gear shift lever and the shifter bars to remain in substantially fixed relation to the chassis frame during such oscillatory movement.

A further object of the invention is to provide a mounting of this character which supports the weight of the engine unit at locations that are spaced apart substantially less than the length of the unit so as to prevent longitudinal deflection of the central portions thereof and to permit the use in the unit of structural parts that are light in weight.

Other objects of .the invention are .to provide yieldable means of a resilient nature in mounting members of this character for sustaining a portion of the weight of the unit and opposing oscillatory movement thereof by the torque re- 3 action impulses of the engine; to provide a pair of such members which are arranged so as to cause their respective yieldable elements to extend inwardly toward the central plane of the engine unit at opposite inclinations to the horlzontal and substantially in encompassing relation to the junction of the gear shift lever and shifter bars; to provide inclined weightsupporting mounting members of this type which, if desired, can be relied upon to yieldably oppose the torque reaction of the engine in the absence of other means especially designed for this purpose; to provide members for opposing oscillatory movement of the unit under the torque reaction impulses of the engine which are fixed to the unit in such a manner as to permit removal of the transmission mechanism and housing while the crankcase, clutch housing, and other-structures carried thereby are retained in their normal positions and supported by the chassis frame; and to provide a yieldable sleeve between the gearshift lever support and the transmission casing of the unitifor sealing the opening in the latter against the admission of dirt and other foreign matter.

An illustrative embodiment of the invention is shown in the accompanying drawings, in which:

Fig. l is a side view, partly in elevation and partly in section, of an internal combustion engine mounted according to my invention in a chassis frame of a vehicle.

Fig. 2 is a transverse sectional view taken on the line II-II of Fig. 1.

Fig. 3 is a transverse sectional view taken on the line III-III of Fig. 1.

Fig. 4 is a fragmentary sectional view taken on the line IV-IV of Fig. 3.

Fig. 5 is a fragmentary vertical sectional view taken on the line V-V of Fig. 3.

Fig. 6 is a fragmentary plan view, partly in section, showing the rear end portion of the engine unit as viewed from the line VIVI of Fi 3.

In the form shown, the improved internal combustion engine mounting is illustrated in conjunction with a vehicle chassis frame which includes longitudinally extending channel members l0 and rigid transversely disposed front and rear members H and I2, respectively, which are secured to the longitudinal side members by rivets or other suitable means. The transverse frame member II is located at the front end of the vehicle chassis frame and the transverse frame member I2 is spaced rearwardly therefrom a distance substantially equal to the combined lengths of the crankcase l3 and clutch housing I 4 of the engine. The crankcase I3 is received between the longitudinal channel members l0 and the clutch and transmission housings I4 and I5, respectively, are rigidly fixed together and to the crankcase and-are longitudinally aligned therewith.

The internal combustion engine is of the multiple cylinder type having cylinders l6, only one of which is shown. Slidably mounted in each cylinder is a reciprocating piston H to which is pivotally attached a connecting rod l8, which is journaled at its lower end on a crankshaft IS in the usual manner. A clutch mechanism (not shown) within the housing l4 connects the crankshaft |9 with transmission mechanism within the housing IS in a conventional manner and the transmission mechanism in turn drives a propeller shaft 26 through a universal or other flexible joint 2|. Only the shifter bars 22 of the transmission mechanism are disclosed.

The transverse member ll of the frame structure has an upstanding intermediate portion 23 best shown in Fig. 2, on which is formed an arcuate shaped portion 24-which"forms a support for and registers with a correspondingly shaped member 25 constituting a portion of an upstanding bracket 26, which is flxed on the front end of the crankcase 3. Disposed intermediate the arcuate shaped portions 24 and 25 is a support 21 which includes a pair of metallic plates 28 and 29, having correspondingly shaped arcuate portions which register with and substantially conform to the curvature of the arcuate members 24 and 25, anda rubber element 30 disposed between the plates 28 and 29 and rigidly fixed to the adjacent faces thereof, preferably by vulcanization. The lower plate 29 is secured to the arcuate portion 24 of the cross member II by means of bolts 3|, and the upper plate 28 is secured to the bracket 26 by bolts 32 which extend through registering apertures in the bracket 26 and in the plate 28.

The rubber connection between the. plates 28 and 29 permits the plate 28 to oscillate relative to the transverse frame member l| about a substantially definite point designated by the numeral 33 and preferably located in a plane 34 in which the center of mass of the engine lies. As shown, at the front end of the unit, this vertical plane is offset somewhat to the left of the vertical plane containing the axis of the crankshaft 9. The location of this vertical plane may, however, vary within substantially wide limits in various engines, depending upon the distribution of the weight of the parts thereof, such as the generator 35, manifold 36, and diverse other auxiliary structures. The curvature of the plates 28 and 29 holds the front part of the engine against transverse movement and, together with the thickness and character of the rubber 36, predetermines the location of the point 33 about which the plate 28 is free to oscillate. As the plate 28 is fixed to the engine, the structure of the front support 2! establishes one of the points that determine the axis about which the engine may oscillate.

The front mounting 21 supports the weight of the front end of the engine and, preferably, the entire remaining weight of the engine is supported by the transverse member l2, which has a bowed central portion 42 extending over the transmission housing i5. Rigidly mounted on the central portion 42 of the transverse member I2 is a gear shift lever dome 43 which is located directly above the transmission housing l5. The gear shift lever dome is provided with a concave seat 44 in which a ball portion 45 of a gear shift lever 46 is swiveled. The lower end portion 41 of the gear shift lever extends through the registering openings 48, 49,,and 56 in the lower end of the dome 43, transverse member I2, and cover 5| of the transmission housing, respectively. Formed on the lower extremity of the gear shift lever is a knob 52 which is receivable in notches 53 of the gear shifter bars 22 of the transmission. The transverse member l2 and transmission cover 5| are provided with registering flanges 55 and 56 which extend toward each other and which surround the openings 49 and 50, respectively. A flexible collar 51, preferably comprising rubber, is disposed around the registering flanges 55 and 56 in such a manner as to seal the opening 50 in the transmission cover against the admission of dirt, dust, and other foreign matter.

The central bowed part 42 of the cross member I2 is provided with a forwardly extending flange 58 on which are formed inwardly extending and inclined flat seat portions 59. The flat portions 59 are disposed above and on opposite sides of the transmission housing l5. Mounted on each flat portion 59 of the flange 58 is a weight supporting and torque opposing member 60 which includes a pair of spaced channel-like plates 6| and 62 having a pad of rubber 63 therebetween and fixed to the adjacent sides of the plates, preferably by vulcanization. The upper plate 6| has side flanges 64 extending transversely of the unit and located between and in spaced relation to transversely extending side flanges 65 of the channel-like plates 62. Portions of the rubber pad 63 are interposed between the plates 6| and 62 and the flanges 64 and 65 thereof, respectively, so as to yieldably hold the unit against movement in the direction of its length. The upper plate 6| of each torque opposing member is rigidly fixed to a bracket 66 which is secured by bolts 61, or other suitable means, to the rear end wall of the clutch housing l4 and the lower plate 62 is fixed to the transverse member by bolts 62'.

These yieldable weight supporting and torque opposing members are disposed substantially tangent to a circle having its center located within the boundaries of the transmission housing and in encompassing relation with respect to the junction of the gear shift lever 46 and the shifter bars 22 so as to yieldably hold the portion of the transmission with which the gear shift lever connects against movement relative to the chassis frame. In this way, the torque opposing members assist in bringing the axis SI, diagrammatically illustrated in Fig. l, with respect to which the unit is oscillated under the influence of the torque reaction impulses, within close proximity of the junction of the gear shift lever and shifter bars. The point 33 on the axis 88 which is established by the front mounting member 21 is preferably located so as to bring the axis substantially through or within close proximity of the center of mass of the engine, diagrammatically illustrated at 69.

The inclined rubber pads iii hold the unit against excessive lateral movement and they also tensionally oppose oscillatory movement of the engine. These pads may also be predetermined to bring the natural vibration frequency of the unit below the frequency of the torque reaction impulses at the lower end of the driving range of the engine. Such construction prevents the occurrence of the torque reaction'impulses in synchronous or phased relation with the natural vibration frequency of the unit upon its mountings during operation above the lower end of the driving range of the engine. All of the advantages of. avoiding displacement of the center,of mass of engine in response to the torque reaction impulses, such as the elimination of objectionable side-sway of the chassis frame and application of transversely directed shock thereon, are obtained without causing objectionable movement of the gear shift lever.

Although but one specific embodiment of the invention is herein shown and described, it will be understood that various changes in the size, shape, and arrangement of parts may be made without departing from the spirit of my invention, and it is not my intention to limit its scope other than by the terms of the appended claims.

What I claim is:'

1. In combination, an engine unit including a variable speed transmission, a frame structure, a gear shift lever support mounted on said frame structure having a gear shift lever swiveled thereon and connected with said transmission mechanism, and a plurality of resilient mounting means interposed between said frame structure and said engine unit for oscillatively supporting the latter, certain of said resilient means being located substantially at the elevation of the connection of said gear shift lever and said transmission mechanism and disposed under compression between opposite upper and lower surfaces on said engine unit and frame structure respectively and being adapted to restrain that portion of said transmission mechanism with which said lever connects against displacement relative to said frame structure and to yieldably oppose oscillatory movement of said unit.

2. A mounting for an internal combustion engine unit having transmission mechanism at one means mounted on said frame structure intermediate the length of said unit for oscillatively supporting the central and rear end portions thereof, said intermediate supporting means including a pair of resilient elementsdisposed under compression between opposed upper and lower surface on said engine unit and frame structure respectively and above said transmisthe central vertical .plane thereof at opposite inclinations to a horizontal plane respectively.

3. A mounting for an internal combustion engine unit including a multiple cylinder internal combustion engine and variable speed transmission mechanism and for a gear shift lever operatively connected at one end with said transmission mechanism, comprising a frame structure, a transverse member on said frame structure having a central portion extending over said transmission, means mounted on said transverse member for supporting'said lever in swiveled relation,

resilient weight supporting mounting means coacting between said frame structure and engine unit for oscillatively supporting the latter, certain of said resilient means being carried by the central portions of said transverse member and having portions thereof located above said transmission and portions substantially in the transverse plane thereof in which the junction of said mechanism and gear shift lever is disposed.

4 A mounting foran internal combustion engine unit including a multiple cylinder internal combustion engine, clutch housing, variable speed transmission mechanism and for a gear shift lever operatively connected at one end with said transmission mechanism, comprising a frame structure, a transverse member on said frame structure having a central portion extending over said transmission, means mounted on said transverse member for supporting said lever in swiveled relation, means on said frame structure for oscillatively supporting the. front end portion of said engine unit, and resilient mounting means on the central portions of said transverse member fixed to said clutch housing for oscillatively supporting the rear and intermediate portions of said unit.

5. A mounting for an internal combustion engine unit having transmission mechanism at one end including a frame structure, a member mounted on said frame structure for oscillatively supporting, one end portion of said unit, and means mounted on said frame structure inter mediate the length of said unit for oscillatively supporting the central and rear end portions thereof, said intermediate supporting means including a pair of rubber pads disposed over said transmission mechanism and extending inwardly toward the central longitudinal vertical plane of said unit at opposite inclinations to a horizontal plane and disposed under compression between opposed upper and lower surfaces on said engine unit and frame structure respectively.

6. A mounting for an internal combustion engine unit including rigidly connected longitudi- .sion mechanism and extending inwardly toward nally aligned crankcase, clutch housing and transmission housing, comprising a frame structure,'and longitudinally spaced mounting members interposed between said frame structure element fixed on said frame structure and extending over said transmission housing, the resilient means of the latter mounting member WIVES: 5371 comprising a pair of rubber pads each extending above said transmission housing and arranged substantially tangent to a circle having a center within the boundaries of said transmission housing and disposed under compression between and having opposite sides fixed to opposed upper and lower surfaces on said unit and said transverse element respectively.

7. A mounting for an internal combustion engine unit including rigidly connected longitudinally aligned crankcase, clutch housing and transmission housing, comprising a frame structure having a rigid transverse element extending over a portion of said unit, a mounting member spaced longitudinally from said rigid transverse element and interposed between said frame structure and unit having a rubber element sustaining a portion of the weight of said unit and oscillatively supporting the latter, a pair of rubber pads fixed on said rigid transverse element substantially at the upper elevation of said transmission housing, one on each side thereof, and a pair of brackets mounted on said clutch housing, each having a portion disposed above and fixed to an upper portion of one of said rubber pads respectively for yieldably sustaining a portion of the weight of said unit by compressive stresses of said rubber pads and adapted to yield,- ably oppose oscillatory movement of said unit and to accommodate vertical movement thereof.

8. A mounting for an internal combustion engine unit including a frame structure and means for oscillatively supporting said unit on said frame structure about an axis extending substantially through the center of mass of said unit at an inclination to the crank shaft thereof, said means including a resilient member located at one extremity of said unit and sustaining a portion of the weight thereof and including a longitudinally spaced mounting member having a pair of resilient weight supporting elements sustaining substantially the remaining portion of the weight of said engine in compression and aligned laterally with reference to said axis and extending inwardly and upwardly toward the longitudinal central plane of said unit at an inclination to a horizontal plane.

9. A mounting for an internal combustion engine unit including a frame structure and means for oscillatively supporting said unit. on said frame structure about a predetermined axis, said means including a pair of longitudinally spaced mounting members, one mounting member having a resilient element located at one end of; said unit in close proximity to said axis and the other mounting member having a resilient element on each side of said axis respectively and each located above the other endportion of said unit and sustaining a portion of the weight of said unit in compression and extending -inwardly toward a longitudinal vertical planev of said unit at opposite inclinations to a horizontal plane thereof respectively.

10. A mounting for an internal combustion engine unit including a frame structure and means for oscillatively supporting said unit on said frame structure about a predetermined axis, said means including a pair of longitudinally spaced mounting members, one of said mounting members having a resilient element on each side of said axis respectively and each located above one end portion of said unit and sustaining a portion of the weight of said unit in compression and extending inwardly toward a longitudinal vertical plane of said unit at an inclination to a horizontal plane thereof respectively.

11. A mounting for an internal combustion engine unit including a frame structure and means for oscillatively supporting said unit on said 'rame structure about a predetermined axis, said means including a pair of longitudinally spaced mounting members, one of said mounting members having a rubber pad on each side of said axis respectively and each located above one end portion of said unit and sustaining a portion of the weight of said unit in compression and extending inwardly toward a longitudinal vertical plane of said unit at an inclination to a horizontal plane thereof.

HARRY T. WOOL-SON. 

